Whew! It took awhile, but here's that list. Some of these critters are incredibly cool (particularly the draknor and "demon").
Tyrannabyss (#2): Tentacled, amphibious beast with a paralytic barbed stinger and armor-rending bite.
Epadrazzil (#2): Scaled apelike creature that is bound to a painting to guard a room.
Ilsidahur (#10): Demon lord of bar-lguras, apelike with ram's horns and a pink hairless tail.
Spottle Toad (#12): Toadlike creature bred for the game of spottle.
Aboleth, Saltwater (#12): Larger, more intelligent aboleth with additional
spell-like abilities.
Hivebrood (#13): Large parasitic insect creatures that infect, control, and eventually destroy their host. They speak via music. Hivebrood come in five varieties.
MacDaer (#13): Unique major cambion.
"Demon" (#14): Not actually a demon; extraplanar creature with very powerful spell-like abilities, poisonous saliva, acidic sweat, regeneration, numerous immunities, and great spell resistance.
Havenmere Sheep (#14): Bad-tempred sheep with butt attacks that climb as well as mountain goats.
Conjurer Puppet (#14): Magical creation that attacks by throwing its hat, which has random effects, or firing a wand.
Stun Puppet (#14): Magical creation with stunning strikes.
Ventriloquist Puppet (#14): Magical creation with spell-like abilities and drumming ability that causes confusion.
Black Golem (#14): Golem with ties to Negative Energy Plane, with gems of true seeing as eyes. Abilities include energy drain, slow aura, true seeing.
Black Golem, Greater (#14): As black golem, but also can create juju zombies and other undead, has charm person gaze, and can command undead in service to its creator.
Wood Golem (#14): This version of the wood golem has round disks for hands, designed to press cheese. Is clumsy and vulnerable to fire.
Blue Mold (#15): Similar to yellow mold, but not vulnerable to sunlight. It thrives in moist, salty environments like sea caves.
Gakarak (#15): Black-barked, treantlike being that wields a huge club which causes entanglement. It can fire wooden darts from its hands and can teleport.
Sacrol (#15): Undead floating skull surrounded by misty tentacles which cause level drain and chokes victims.
Grey Philosopher (#15): Cowled undead formed from a chaotic cleric, it has no physical attacks but controls malices.
Malice (#15): Hateful, small wisps of smoke whose claws deal different damage based upon the alignment of their target. These are the projections of the grey philosopher's thoughts.
Possession (#15): Undead spirit that inhabits objects and controls them.
Hzu Tzu (#15): Greater nature spirit that inhabits rivers, appears as giant black carp. He can shapechange into reptilian gargantua, has spells and spell-like abilities, and nereid concubines.
Snake, Giant Fanged Python (#15): 40- to 50-foot snake with venomous fangs and constrict attack.
Wani (#18): Gargantuan crocodiles that are immune to spells that effect animals.
House Hunter (#19): Relatives of mimics that appear as stone, wood, or thatch buildings!
Spirit Leopard (#22): Denizen of alternate Material Plane, looks like a leopard larger than a cave bear. Has stunning roar, sees invisibile creatures, level drain, and spell-like abilities.
Eqqus (#22): A magical piece of jewelry that polymorphs into a beast of burden or another creature, from a limited list.
Tuyewera (#22): Undead humanoid with legs severed at the knees. It spreads disease and can steal a victim's breath, and it is immune to all weapon attacks.
Ahmoras (#22): Black dragon spirit trapped in a mechanical monstrosity created by gnomes. Unique.
Death-From-Above (#24): Rubber-matlike creature that drops on victims and suffocates them.
Draknor (#24): 55 ft. wide, 40 ft. long, 25 ft. high monstrosity. It attacks with 2 claws and dorsal tentacles. Can constrict and swallow whole, can send a burrowing tentacle to attack at range, has a heat ray, regeneration, and a host of immunities and resistances. Illithids fear it...need I say more?
Ancient Vrock (#25): More powerful race of vrocks, precursors to the current variety. They possess greater spell-like abilities.
Mooncreature (#25): Essentially, a template that is applied to the offspring of creatures that have partaken of a moonmelon. Has numerous changes and mutations. Moonorcs are the sample creatures used in the adventure.
Shimmering Wrath (#26): Has ties to both Negative Energy Plane and Quasi-Elemental Plane of Lightning. Has electrical touch attack, and those attacking it with metal take same damage. Its shadows deal cold damage.